1. Allison, R. D. (1967) Recent biomedical applications of four-electrode impedance measuring techniques.Biomed. Sci. Instr.,3, 309–327.
2. Baker, L. E. (1971) Biomedical applications of electricalimpedance measurements. In:IEE Medical Electronics Monographs. Vol. 1 Eds. Hill, D. W. and Watson, B. W., Peter Peregrinus Ltd., 1–42.
3. Bergel, D. H. (1961) The static elastic properties of the arterial wall.J. Physiol. 156 445–457.
4. Cooley, W. L. (1972) The calculation of cardiac stroke volume from variations in transthoracic electrical impedance.Biomed. Eng. 7, 316–319.
5. Denniston, J. C. andBaker, L. E. (1975) Measurment of pleural effusion by electrical impedance.J. Appl. Physiol. 38, 851–857.